Thomas's brother, Amir, is missing. M's year-long training with Mai has reached a disappointing plateau and unless Amir can be found, there's no chance that M will survive his upcoming battle with A'loc. If A'loc wins, the world will be at his mercy.
The local police need their assistance finding a serial killer with a hunger for young women. If that's bad not enough, a prototype android escapes their facility, forcing M and Thomas to chase it down before it kills again.